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Screening for diabetic microalbuminuria in routine clinical care: which method?
J P Shield1, L P Hunt, J D Baum
1Institute of Child Health, St Michael's Hill, Bristol.
Archives of Disease in Childhood
|June 1, 1995
Summary
The albumin/creatinine ratio in early morning urine is an effective screening tool for microalbuminuria. This test offers high sensitivity and specificity for detecting early kidney damage.
Area of Science:
- Nephrology
- Clinical Chemistry
- Urine Analysis
Background:
- Microalbuminuria is an early indicator of kidney disease.
- Accurate screening tests are crucial for timely intervention.
- Assessing early morning urine samples is convenient for patients.
Purpose of the Study:
- To compare albumin concentration and albumin/creatinine ratio (ACR) for microalbuminuria screening.
- To identify the most effective screening method using timed overnight urine as a reference standard.
Main Methods:
- Evaluated albumin concentrations in early morning urine.
- Measured albumin/creatinine ratios in early morning urine.
- Compared results against a reference standard of timed overnight urine specimens.
Main Results:
- The albumin/creatinine ratio demonstrated high diagnostic accuracy.
- A cut-off of ≥ 2.0 mg/mmol for ACR showed 93% specificity and 97% sensitivity.
- Simple albumin concentration was less effective for screening.
Conclusions:
- The albumin/creatinine ratio is a suitable and reliable screening test for microalbuminuria.
- Early morning urine ACR testing can effectively identify individuals at risk for kidney damage.